“…Direct and indirect release of these nanoparticles (NPs) into aquatic environments via bathing, sewage effluent (Daughton and Ternes, 1999;Handy and Shaw, 2007;Ternes et al, 2004) and other engineering applications (Chen et al, 2004;Nagaveni et al, 2004) have increased the exposure chances of humans and ecosystems to NPs (Nowack and Bucheli, 2007). Consequently, the potential impacts of TiO 2 and ZnO NPs on aquatic ecosystems have attracted special attention due to the unique properties of NPs Handy et al, 2008;Oberdörster et al, 2005;Wiench et al, 2009).…”